초록 ▼

A filter element includes first and second ends, an extension of filter media, an outer liner, an inner liner, and a sealing ring. The first end cap consists essentially of a foamed polyurethane having an as molded density of about 14-22 pounds per cubic foot. The sealing ring extends outwardly only

A filter element includes first and second ends, an extension of filter media, an outer liner, an inner liner, and a sealing ring. The first end cap consists essentially of a foamed polyurethane having an as molded density of about 14-22 pounds per cubic foot. The sealing ring extends outwardly only from the outer surface of the first end cap. The sealing ring is a molded part of the first end cap and consists essentially of foamed polyurethane having an as molded density of about 14-22 pounds per cubic foot. The sealing ring has an axially directed top edge, first and second sidewall portions, and a base. The first and second sidewall portions are immediately adjacent to and angled from the top edge of the sealing ring.

대표청구항 ▼

[ We claim:] [1.] A filter element comprising:(a) first and second end caps;(i) said first end cap consisting essentially of foamed polyurethane having an as molded density of about 14-22 pounds per cubic foot;(ii) said first end cap having a first outer surface and an outer periphery;(b) a cylindri

[ We claim:] [1.] A filter element comprising:(a) first and second end caps;(i) said first end cap consisting essentially of foamed polyurethane having an as molded density of about 14-22 pounds per cubic foot;(ii) said first end cap having a first outer surface and an outer periphery;(b) a cylindrical extension of filter media enclosed between said first and second end caps;(i) said media comprising pleated paper media;(ii) said first end cap and said filter media defining a central aperture; said central aperture having a diameter of at least 5 inches;(c) an outer liner extending between said first and second end caps;(e) an inner liner extending between said first and second end caps;(i) said inner and outer liners being an expanded metal screen;(f) an annular sealing ring;(i) said sealing ring extending outwardly from said first outer surface of said first end cap;(ii) said sealing ring positioned about 0.2-0.7 inch from said central aperture;(iii) said sealing ring being an integrally molded part of said first end cap;(iv) said sealing ring consisting essentially of foamed polyurethane having an as molded density of about 14-22 pounds per cubic foot;(v) said sealing ring having an axially directed top edge, first and second sidewall portions, and a base;(A) said first sidewall portion being immediately adjacent to and angled from said sealing ring top edge;(B) said second sidewall portion being immediately adjacent to and angled from said sealing ring top edge;(C) said top edge, first sidewall portion, and second sidewall portion defining a portion of said sealing ring which has diverging sidewalls in extension from said top edge;(D) said base having a cross-section width greater than a cross-section of the top edge of the sealing ring;(i) said base having a width of at least 0.5 inches, when viewed as a cross-section;(v) said first outer surface of said first end cap being a continuous, planar surface in complete extension from said outer periphery of said first end cap to said first sidewall portion.